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tag/Id3Load: split tag_id3_read()

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This commit is contained in:
Max Kellermann
2016-02-21 07:14:04 +01:00
parent 84fe3bfa87
commit 054e9ecaae
1 changed files with 14 additions and 6 deletions
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20
src/tag/Id3Load.cxx
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@@ -60,13 +60,12 @@ get_id3v2_footer_size(FILE *stream, long offset, int whence)
} }
static UniqueId3Tag static UniqueId3Tag
tag_id3_read(FILE *stream, long offset, int whence) ReadId3Tag(FILE *file)
{ {
/* It's ok if we get less than we asked for */
id3_byte_t query_buffer[ID3_TAG_QUERYSIZE]; id3_byte_t query_buffer[ID3_TAG_QUERYSIZE];
size_t query_buffer_size = fill_buffer(query_buffer, ID3_TAG_QUERYSIZE, size_t query_buffer_size = fread(query_buffer, 1, sizeof(query_buffer),
stream, offset, whence); file);
if (query_buffer_size <= 0) if (query_buffer_size == 0)
return nullptr; return nullptr;
/* Look for a tag header */ /* Look for a tag header */
@@ -87,13 +86,22 @@ tag_id3_read(FILE *stream, long offset, int whence)
/* now read the remaining bytes */ /* now read the remaining bytes */
const size_t remaining = tag_size - query_buffer_size; const size_t remaining = tag_size - query_buffer_size;
const size_t nbytes = fread(end, 1, remaining, stream); const size_t nbytes = fread(end, 1, remaining, file);
if (nbytes != remaining) if (nbytes != remaining)
return nullptr; return nullptr;
return UniqueId3Tag(id3_tag_parse(tag_buffer.get(), tag_size)); return UniqueId3Tag(id3_tag_parse(tag_buffer.get(), tag_size));
} }
static UniqueId3Tag
tag_id3_read(FILE *file, long offset, int whence)
{
if (fseek(file, offset, whence) != 0)
return 0;
return ReadId3Tag(file);
}
static UniqueId3Tag static UniqueId3Tag
tag_id3_find_from_beginning(FILE *stream) tag_id3_find_from_beginning(FILE *stream)
{ {